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H. GALLET. LOCKING DEVICE FOR DETACHABLE WHEELS. APPLICATION FILED MAR.6 1917.

1,3 1 1,341 Patented July 29, 1919.

M l A, Q )1174 H. GALLET. LOCKING DEVICE FOR DETACHABLE WHEELS.

APPLICATION FILED MAR. 6, I917.

Patented July 29, 1919.

2 SHEETS-SHEET 2 PLANOGRAPH' c0., wAsI-xmdmu, n. c.

. KE EL P ET 011 B ITEAU QFB ANQE, sslfi onm ETABL S EMENTS DE I N wBOUZEEON, ;so,c; [n'1 n snowma onrurnnux', FRANCE, A CORPORATION on ormeant-E. WHEELS.-

PatentedrJu-ly 29, 19.19.

, Applicatiqnfiled lvlarchfii917;SerialNo.-152,638.

To (611 1072107742 it may concern Be it known that I, HnNRrGAL En'enghneer,"of'36' Quai National, at: Puteaux, De-

partment of the Seine, France, citizen of the French Republic,i.haveinvented certain new and fluse-ful Improvements in or Relating toLocking -Devices for Detachable Wheels and I doherehydeclare tl'1efollow; ingto 1 be a full", clear; and exact d escription oftheinvention, such as; will enableothers skilled in they-art; to whichitappert'ains to make-and usethe-same; y

This invention relates to a lock for de tachableg wheelspand refers moreparticularly to looks of the kind comprising acap and a locking deviceoperated i n 'suc'ha way that any tendency .to-unscrew theeap tends toincrease the locking-eifect;

Various'caps of this type have already been "suggested and the obj ect'of this invenvice whereby not only very great certainty of operation isobtainedbut also a simple, light and conveniently small construction.

According to this invention the locking device is in the form of a steelsegment mounted in a groove in the cap or ring, similar to a pistonring, and surrounding the cap and having a milled external surface thesteel segment being fixed to the cap at one end by means of tenons orprojecting pins. The segment which is split projects out of the grooveon account of its elasticity, the cap is then locked against the falsehub by being screwed onto the nave in the usual way, the segment beingcompressed into the V groove by means of a suitable wrench in such a.way that it cannot expand against theflange ring of the wheel nave. Thelatter is milled internally in a manner corresponding to the segment, sothat when the wrench is removed the segment expands and the milledsurface enters into the milling on the flange ring. The segment isplaced in any suitable manner on the cap, so that if the cap tends tounscrew, the direction of its angular displacement tends to expand thesegment and to press the milling of the segment more closely againstthat of the flange ring on the wheel. I

The accompanying drawings show by way of example a construction inaccordance with the present invention. 7

c Figure 1 is a sectional elevation through the axis, showing a devicein accordance with the invention.

Fig. 2 is-a sectional view disclosing the manner in which the wrenchoperates to compress the locking ring.

Referring to the drawings 1 represents the false hub, 2 the nave and 3the locking capofQ on 1.

l The cap 3 is providedvw-ith a groove 4 extending around its periphery,in which is placed a segmentfi, which is milled on its externalsurf'ace. "This segment is secured to the cap 3 by two tenons 6 orprojecting pins in such away that one of its ends is securelyfixedagainst rotation, whether the segment projects from the groove ornot. Thewheel, whichmay be of wood, as shown at 7 1n the draw1ngs,'1sprovided with a 011'- cular flange ring 8 which projects in such manneras toembrace the cap, leaving a tion is to provide an improvedlocking-de certain amount of clearance. The front part of this flangering which faces the groove 4, is milled in a manner corresponding tothe milling of the segment 5. Arrangements are made to confine thesegment in the groove by any suitable means, which enables the cap to bescrewed up until it jams, and the segment is then released. As itexpands, its milled surface penetrates into that of the flange ring andlocks the cap to the wheel. The extremity of the segment to be fixed tothe cap is chosen in such a way that the cap, in unscrewing tends toexpand the segment still further. In this way the milled surfaces engageeach other more effectively and prevent any further rotation of the cap.

Fig. 2 shows a form of wrench given by way of example, which can be usedfor fastening and unfastening the cap. This Wrench comprises a main part9 which embraces the cap externally and to which a corresponding part orcover-ring 10 is jointed. One of the ends 11 of this ring 10 carries twolinks 12 pivotally connected on one hand to the end 11 and on the otherhand to a lever 13, the short arm 14: of which is provided with a cam orwhich can abut upon an adjustable stop consisting of a screw 15 lockedby a nut 16 in a support 17 on the piece 9. The lever 13 includes a Ilever 13 is then moved so thatthe nose 14 abuts against the extremity ofthe stop 15, and the handle 13 is acted upon so as to bring it nearer tothe key. The guides 12 exert a pull bringing the cover ring nearer tothe main part 9 of the wrench, and the split segment inclosed betweenthe two parts is fully closed or approximately so when the lever 13occupies the position shown in Fig. 2. It is suflicient to jam the capin the usual way, and when this has been done'the handle 13 is movedaway, from the main part 9, the cover-ring 10 is removed and the segmentby expanding in the flangering, locks the cap. Y t i In the exampleillustrated, the parts are so arranged as to make the pointof closure ofthe two parts of the wrench coincide with the extremities of thesegment, so as to act on the latter more directly. Of course thiscondition is not essential, f It is, however preferable, but requiresthe arrangement of a guide mark on the plug and on thewrench, so as tobring the corresponding'parts opposite to' -one another correctly. -Theadjustable stop 15 enables the distance between the main piece and thecover-ring to be adjusted for each cap, according to the degree ofprojection of the segment.

I claim:

The combination with a wheel, including a false hub and a flange ring,the hub and ring being spaced apart at their outer ends, the endof thehub. having external threads and the end of the ring having internalmilling, of a hub capadaptedtoscrew upon the end of the false hub andhaving an annular recess therein, and a split ring located in saidrecess, said ring having a milled outer face arranged to engage themilled face of the flange ring and hav ng a portion projecting beyondthe'end of said ririiig V V In testimony whereof I a x my signature,- inpresence of two witnesses.

v HENRIGALLET.

Witnessesz p I CHAS. P. PRESSLY, HENRI COHEN;

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Iatents,

Washington, D. 0." 1

